docs: def get_items(start_num, num_items):
      """
      Generate a sequence of dynamo items
  
      :param start_num: Start index
      :type start_num: int
      :param num_items: Number of items
      :type num_items: int
      :return: List of dictionaries
      :rtype: list of dict
      """
      result = []
      for i in range(start_num, start_num+num_items):
          result.append({'pk': {'S': 'item{0}'.format(i)}})
      return result